// "use strict";
/*
 * @Description: 变量
 * @Author: rendc
 * @Date: 2022-09-26 10:03:14
 * @LastEditors: rendc
 * @LastEditTime: 2022-09-27 09:43:35
 */
console.log("1");
console.log('1');
console.log(2);

// 变量的声明
var a;
console.log('🤡 CC - a', a);
// 变量初始化
a = 1;
console.log('🤡 CC - a', a);

// 变量声明同时初始化
var b = 2;
console.log('🤡 CC - b', b);

// 多变量同时声明初始化
var c = 3, d = 4, e;
console.log('🤡 CC - c , d , e', c, d, e);

var $9a9 = 9;
console.log('🤡 CC - $9a9', $9a9);
// ES5 var
// ES6 let const
// 用var关键字声明的变量可以重复声明
var a = 100;

console.log('🤡 CC - _a', _a);
var _a

var let = "let";
console.log('🤡 CC - let', let);